{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "805393455",
    "entityType": "Track",
    "nonce": "0xc3023cacadf94745040f059f9f2e9b8b47576ea2b92397fa8cb1cf5327fee3f9",
    "signature": "0xb74ab6a779dd78cbb2c5cb0c4ca5f52e4cbd2cd0d57d2465861457052278add24e511c8a0f3b9accefda7a5ad518e268f09077c7cd86d31de86f804ccafe56e31b",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}